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637fa988 JD |
1 | /* Functions for handle font changes dynamically. |
2 | Copyright (C) 2009 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software: you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation, either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "config.h" | |
21 | #include <setjmp.h> | |
22 | #include <fcntl.h> | |
23 | #include "lisp.h" | |
24 | #include "xterm.h" | |
25 | #include "xsettings.h" | |
26 | #include "frame.h" | |
27 | #include "blockinput.h" | |
28 | #include "termhooks.h" | |
29 | #include "termopts.h" | |
30 | ||
31 | #include <X11/Xproto.h> | |
32 | ||
33 | #ifdef HAVE_GCONF | |
34 | #include <gconf/gconf-client.h> | |
35 | #endif | |
36 | #ifdef HAVE_XFT | |
37 | #include <X11/Xft/Xft.h> | |
38 | #endif | |
39 | ||
40 | static char *current_mono_font; | |
41 | static struct x_display_info *first_dpyinfo; | |
42 | static Lisp_Object Qfont_name, Qfont_render; | |
dfb3c4c6 | 43 | static int use_system_font; |
637fa988 JD |
44 | |
45 | #ifdef HAVE_GCONF | |
46 | static GConfClient *gconf_client; | |
47 | #endif | |
48 | ||
49 | ||
50 | static void | |
51 | store_font_changed_event (arg, display_name) | |
52 | Lisp_Object arg; | |
53 | Lisp_Object display_name; | |
54 | { | |
55 | struct input_event event; | |
56 | EVENT_INIT (event); | |
57 | event.kind = CONFIG_CHANGED_EVENT; | |
58 | event.frame_or_window = display_name; | |
59 | event.arg = arg; | |
60 | kbd_buffer_store_event (&event); | |
61 | } | |
62 | ||
63 | #ifdef HAVE_GCONF | |
64 | ||
65 | #define SYSTEM_MONO_FONT "/desktop/gnome/interface/monospace_font_name" | |
66 | ||
67 | /* Callback called when something changed in GConf that we care about, | |
68 | that is SYSTEM_MONO_FONT. */ | |
69 | ||
70 | static void | |
71 | something_changedCB (client, cnxn_id, entry, user_data) | |
72 | GConfClient *client; | |
73 | guint cnxn_id; | |
74 | GConfEntry *entry; | |
75 | gpointer user_data; | |
76 | { | |
77 | GConfValue *v = gconf_entry_get_value (entry); | |
78 | ||
79 | if (!v) return; | |
80 | if (v->type == GCONF_VALUE_STRING) | |
81 | { | |
82 | const char *value = gconf_value_get_string (v); | |
83 | int i; | |
84 | if (current_mono_font != NULL && strcmp (value, current_mono_font) == 0) | |
85 | return; // No change. | |
86 | ||
87 | xfree (current_mono_font); | |
88 | current_mono_font = xstrdup (value); | |
89 | } | |
90 | ||
91 | ||
92 | if (first_dpyinfo != NULL) | |
93 | { | |
94 | /* Check if display still open */ | |
95 | struct x_display_info *dpyinfo; | |
96 | int found = 0; | |
97 | for (dpyinfo = x_display_list; !found && dpyinfo; dpyinfo = dpyinfo->next) | |
98 | found = dpyinfo == first_dpyinfo; | |
99 | ||
dfb3c4c6 | 100 | if (found && use_system_font) |
637fa988 JD |
101 | store_font_changed_event (Qfont_name, |
102 | XCAR (first_dpyinfo->name_list_element)); | |
103 | } | |
104 | } | |
105 | #endif /* HAVE_GCONF */ | |
106 | ||
107 | #ifdef HAVE_XFT | |
108 | ||
21050de1 JD |
109 | /* Older fontconfig versions don't have FC_LCD_*. */ |
110 | #ifndef FC_LCD_NONE | |
111 | #define FC_LCD_NONE 0 | |
112 | #endif | |
113 | #ifndef FC_LCD_DEFAULT | |
114 | #define FC_LCD_DEFAULT 1 | |
115 | #endif | |
116 | #ifndef FC_LCD_FILTER | |
117 | #define FC_LCD_FILTER "lcdfilter" | |
118 | #endif | |
119 | ||
637fa988 JD |
120 | /* Find the window that contains the XSETTINGS property values. */ |
121 | ||
122 | static void | |
123 | get_prop_window (dpyinfo) | |
124 | struct x_display_info *dpyinfo; | |
125 | { | |
126 | Display *dpy = dpyinfo->display; | |
127 | ||
128 | XGrabServer (dpy); | |
129 | dpyinfo->xsettings_window = XGetSelectionOwner (dpy, | |
130 | dpyinfo->Xatom_xsettings_sel); | |
131 | if (dpyinfo->xsettings_window != None) | |
132 | /* Select events so we can detect if window is deleted or if settings | |
133 | are changed. */ | |
134 | XSelectInput (dpy, dpyinfo->xsettings_window, | |
135 | PropertyChangeMask|StructureNotifyMask); | |
136 | ||
137 | XUngrabServer (dpy); | |
138 | } | |
139 | ||
140 | struct xsettings | |
141 | { | |
142 | FcBool aa, hinting; | |
143 | int rgba, lcdfilter, hintstyle; | |
144 | double dpi; | |
145 | }; | |
146 | ||
147 | #define SWAP32(nr) (((nr) << 24) | (((nr) << 8) & 0xff0000) \ | |
148 | | (((nr) >> 8) & 0xff00) | ((nr) >> 24)) | |
149 | #define SWAP16(nr) (((nr) << 8) | ((nr) >> 8)) | |
150 | #define PAD(nr) (((nr) + 3) & ~3) | |
151 | ||
152 | /* Parse xsettings and extract those that deal with Xft. | |
153 | See http://freedesktop.org/wiki/Specifications/XSettingsRegistry | |
154 | and http://standards.freedesktop.org/xsettings-spec/xsettings-spec-0.5.html. | |
155 | ||
156 | Layout of prop. First is a header: | |
157 | ||
158 | bytes type what | |
159 | ------------------------------------ | |
160 | 1 CARD8 byte-order | |
161 | 3 unused | |
162 | 4 CARD32 SERIAL | |
163 | 4 CARD32 N_SETTINGS | |
164 | ||
165 | Then N_SETTINGS records, with header: | |
166 | ||
167 | bytes type what | |
168 | ------------------------------------ | |
169 | 1 SETTING_TYPE type (0 = integer, 1 = string, 2 RGB color). | |
170 | 1 unused | |
171 | 2 CARD16 n == name-length | |
172 | n STRING8 name | |
173 | p unused, p=pad_to_even_4(n) | |
174 | 4 CARD32 last-change-serial | |
175 | ||
176 | and then the value, For string: | |
177 | ||
178 | bytes type what | |
179 | ------------------------------------ | |
180 | 4 CARD32 n = value-length | |
181 | n STRING8 value | |
182 | p unused, p=pad_to_even_4(n) | |
183 | ||
184 | For integer: | |
185 | ||
186 | bytes type what | |
187 | ------------------------------------ | |
188 | 4 INT32 value | |
189 | ||
190 | For RGB color: | |
191 | ||
192 | bytes type what | |
193 | ------------------------------------ | |
194 | 2 CARD16 red | |
195 | 2 CARD16 blue | |
196 | 2 CARD16 green | |
197 | 2 CARD16 alpha | |
198 | ||
199 | */ | |
200 | ||
201 | static int | |
202 | parse_xft_settings (prop, bytes, settings) | |
203 | unsigned char *prop; | |
204 | unsigned long bytes; | |
205 | struct xsettings *settings; | |
206 | { | |
207 | Lisp_Object byteorder = Fbyteorder (); | |
208 | int my_bo = XFASTINT (byteorder) == 'B' ? MSBFirst : LSBFirst; | |
209 | int that_bo = prop[0]; | |
210 | CARD32 n_settings; | |
211 | int bytes_parsed = 0; | |
212 | int settings_seen = 0; | |
213 | int i = 0; | |
214 | ||
215 | /* First 4 bytes is a serial number, skip that. */ | |
216 | ||
217 | if (bytes < 12) return BadLength; | |
218 | memcpy (&n_settings, prop+8, 4); | |
219 | if (my_bo != that_bo) n_settings = SWAP32 (n_settings); | |
220 | bytes_parsed = 12; | |
221 | ||
222 | memset (settings, 0, sizeof (*settings)); | |
223 | ||
224 | while (bytes_parsed+4 < bytes && settings_seen < 6 | |
225 | && i < n_settings) | |
226 | { | |
227 | int type = prop[bytes_parsed++]; | |
228 | CARD16 nlen; | |
229 | CARD32 vlen, ival = 0; | |
230 | char name[128]; /* The names we are looking for are not this long. */ | |
231 | char sval[128]; /* The values we are looking for are not this long. */ | |
232 | int is_xft; | |
233 | int to_cpy; | |
234 | ||
235 | sval[0] = '\0'; | |
236 | ++i; | |
237 | ++bytes_parsed; /* Padding */ | |
238 | ||
239 | memcpy (&nlen, prop+bytes_parsed, 2); | |
240 | bytes_parsed += 2; | |
241 | if (my_bo != that_bo) nlen = SWAP16 (nlen); | |
242 | if (bytes_parsed+nlen > bytes) return BadLength; | |
243 | to_cpy = nlen > 127 ? 127 : nlen; | |
244 | memcpy (name, prop+bytes_parsed, to_cpy); | |
245 | name[to_cpy] = '\0'; | |
246 | ||
247 | bytes_parsed += nlen; | |
248 | bytes_parsed = PAD (bytes_parsed); | |
249 | ||
250 | bytes_parsed += 4; /* Skip serial for this value */ | |
251 | if (bytes_parsed > bytes) return BadLength; | |
252 | ||
253 | is_xft = nlen > 6 && strncmp (name, "Xft/", 4) == 0; | |
254 | ||
255 | switch (type) | |
256 | { | |
257 | case 0: /* Integer */ | |
258 | if (bytes_parsed+4 > bytes) return BadLength; | |
259 | if (is_xft) | |
260 | { | |
261 | memcpy (&ival, prop+bytes_parsed, 4); | |
262 | if (my_bo != that_bo) ival = SWAP32 (ival); | |
263 | } | |
264 | bytes_parsed += 4; | |
265 | break; | |
266 | ||
267 | case 1: /* String */ | |
268 | if (bytes_parsed+4 > bytes) return BadLength; | |
269 | memcpy (&vlen, prop+bytes_parsed, 4); | |
270 | bytes_parsed += 4; | |
271 | if (my_bo != that_bo) vlen = SWAP32 (vlen); | |
272 | if (is_xft) | |
273 | { | |
274 | to_cpy = vlen > 127 ? 127 : vlen; | |
275 | memcpy (sval, prop+bytes_parsed, to_cpy); | |
276 | sval[to_cpy] = '\0'; | |
277 | } | |
278 | bytes_parsed += vlen; | |
279 | bytes_parsed = PAD (bytes_parsed); | |
280 | break; | |
281 | ||
282 | case 2: /* RGB value */ | |
283 | /* No need to parse this */ | |
284 | if (bytes_parsed+8 > bytes) return BadLength; | |
285 | bytes_parsed += 8; /* 4 values (r, b, g, alpha), 2 bytes each. */ | |
286 | break; | |
287 | ||
288 | default: /* Parse Error */ | |
289 | return BadValue; | |
290 | } | |
291 | ||
292 | if (is_xft) | |
293 | { | |
294 | ++settings_seen; | |
295 | if (strcmp (name, "Xft/Antialias") == 0) | |
296 | settings->aa = ival != 0; | |
297 | else if (strcmp (name, "Xft/Hinting") == 0) | |
298 | settings->hinting = ival != 0; | |
299 | else if (strcmp (name, "Xft/HintStyle") == 0) | |
300 | { | |
301 | if (strcmp (sval, "hintnone") == 0) | |
302 | settings->hintstyle = FC_HINT_NONE; | |
303 | else if (strcmp (sval, "hintslight") == 0) | |
304 | settings->hintstyle = FC_HINT_SLIGHT; | |
305 | else if (strcmp (sval, "hintmedium") == 0) | |
306 | settings->hintstyle = FC_HINT_MEDIUM; | |
307 | else if (strcmp (sval, "hintfull") == 0) | |
308 | settings->hintstyle = FC_HINT_FULL; | |
309 | } | |
310 | else if (strcmp (name, "Xft/RGBA") == 0) | |
311 | { | |
312 | if (strcmp (sval, "none") == 0) | |
313 | settings->rgba = FC_RGBA_NONE; | |
314 | else if (strcmp (sval, "rgb") == 0) | |
315 | settings->rgba = FC_RGBA_RGB; | |
316 | else if (strcmp (sval, "bgr") == 0) | |
317 | settings->rgba = FC_RGBA_BGR; | |
318 | else if (strcmp (sval, "vrgb") == 0) | |
319 | settings->rgba = FC_RGBA_VRGB; | |
320 | else if (strcmp (sval, "vbgr") == 0) | |
321 | settings->rgba = FC_RGBA_VBGR; | |
322 | } | |
323 | else if (strcmp (name, "Xft/DPI") == 0) | |
324 | settings->dpi = (double)ival/1024.0; | |
325 | else if (strcmp (name, "Xft/lcdfilter") == 0) | |
326 | { | |
327 | if (strcmp (sval, "none") == 0) | |
328 | settings->lcdfilter = FC_LCD_NONE; | |
329 | else if (strcmp (sval, "lcddefault") == 0) | |
330 | settings->lcdfilter = FC_LCD_DEFAULT; | |
331 | } | |
332 | } | |
333 | } | |
334 | ||
335 | return Success; | |
336 | } | |
337 | ||
338 | static int | |
339 | read_xft_settings (dpyinfo, settings) | |
340 | struct x_display_info *dpyinfo; | |
341 | struct xsettings *settings; | |
342 | { | |
343 | long long_len; | |
344 | Atom act_type; | |
345 | int act_form; | |
346 | unsigned long nitems, bytes_after; | |
347 | unsigned char *prop = NULL; | |
348 | Display *dpy = dpyinfo->display; | |
349 | int rc; | |
350 | ||
351 | x_catch_errors (dpy); | |
352 | rc = XGetWindowProperty (dpy, | |
353 | dpyinfo->xsettings_window, | |
354 | dpyinfo->Xatom_xsettings_prop, | |
355 | 0, LONG_MAX, False, AnyPropertyType, | |
356 | &act_type, &act_form, &nitems, &bytes_after, | |
357 | &prop); | |
358 | ||
359 | if (rc == Success && prop != NULL && act_form == 8 && nitems > 0 | |
360 | && act_type == dpyinfo->Xatom_xsettings_prop) | |
361 | rc = parse_xft_settings (prop, nitems, settings); | |
362 | ||
363 | XFree (prop); | |
364 | ||
365 | x_uncatch_errors (); | |
366 | ||
367 | return rc == Success; | |
368 | } | |
369 | ||
370 | static void | |
371 | apply_xft_settings (dpyinfo, send_event_p) | |
372 | struct x_display_info *dpyinfo; | |
373 | int send_event_p; | |
374 | { | |
375 | FcPattern *pat; | |
376 | struct xsettings settings, oldsettings; | |
377 | int changed = 0; | |
378 | ||
379 | if (!read_xft_settings (dpyinfo, &settings)) | |
380 | return; | |
381 | ||
382 | memset (&oldsettings, 0, sizeof (oldsettings)); | |
383 | ||
384 | pat = FcPatternCreate (); | |
385 | XftDefaultSubstitute (dpyinfo->display, | |
386 | XScreenNumberOfScreen (dpyinfo->screen), | |
387 | pat); | |
388 | FcPatternGetBool (pat, FC_ANTIALIAS, 0, &oldsettings.aa); | |
389 | FcPatternGetBool (pat, FC_HINTING, 0, &oldsettings.hinting); | |
390 | FcPatternGetInteger (pat, FC_HINT_STYLE, 0, &oldsettings.hintstyle); | |
391 | FcPatternGetInteger (pat, FC_LCD_FILTER, 0, &oldsettings.lcdfilter); | |
392 | FcPatternGetInteger (pat, FC_RGBA, 0, &oldsettings.rgba); | |
393 | FcPatternGetDouble (pat, FC_DPI, 0, &oldsettings.dpi); | |
394 | ||
395 | if (oldsettings.aa != settings.aa) | |
396 | { | |
397 | FcPatternDel (pat, FC_ANTIALIAS); | |
398 | FcPatternAddBool (pat, FC_ANTIALIAS, settings.aa); | |
399 | ++changed; | |
400 | } | |
401 | if (oldsettings.hinting != settings.hinting) | |
402 | { | |
403 | FcPatternDel (pat, FC_HINTING); | |
404 | FcPatternAddBool (pat, FC_HINTING, settings.hinting); | |
405 | ++changed; | |
406 | } | |
407 | if (oldsettings.rgba != settings.rgba) | |
408 | { | |
409 | FcPatternDel (pat, FC_RGBA); | |
410 | FcPatternAddInteger (pat, FC_RGBA, settings.rgba); | |
411 | ++changed; | |
412 | } | |
a6eb20d8 | 413 | /* Older fontconfig versions don't have FC_LCD_FILTER. */ |
637fa988 JD |
414 | if (oldsettings.lcdfilter != settings.lcdfilter) |
415 | { | |
416 | FcPatternDel (pat, FC_LCD_FILTER); | |
417 | FcPatternAddInteger (pat, FC_LCD_FILTER, settings.lcdfilter); | |
418 | ++changed; | |
419 | } | |
420 | if (oldsettings.hintstyle != settings.hintstyle) | |
421 | { | |
422 | FcPatternDel (pat, FC_HINT_STYLE); | |
423 | FcPatternAddInteger (pat, FC_HINT_STYLE, settings.hintstyle); | |
424 | ++changed; | |
425 | } | |
426 | if (oldsettings.dpi != settings.dpi) | |
427 | { | |
428 | Lisp_Object frame, tail; | |
429 | ||
430 | FcPatternDel (pat, FC_DPI); | |
431 | FcPatternAddDouble (pat, FC_DPI, settings.dpi); | |
432 | ++changed; | |
433 | ||
434 | /* Change the DPI on this display and all frames on the display. */ | |
435 | dpyinfo->resy = dpyinfo->resx = settings.dpi; | |
436 | FOR_EACH_FRAME (tail, frame) | |
437 | if (FRAME_X_P (XFRAME (frame)) | |
438 | && FRAME_X_DISPLAY_INFO (XFRAME (frame)) == dpyinfo) | |
439 | XFRAME (frame)->resy = XFRAME (frame)->resx = settings.dpi; | |
440 | } | |
441 | ||
442 | if (changed) | |
443 | { | |
444 | XftDefaultSet (dpyinfo->display, pat); | |
445 | if (send_event_p) | |
446 | store_font_changed_event (Qfont_render, | |
447 | XCAR (dpyinfo->name_list_element)); | |
448 | } | |
449 | else | |
450 | FcPatternDestroy (pat); | |
451 | } | |
452 | ||
453 | #endif /* HAVE_XFT */ | |
454 | ||
455 | void | |
456 | xft_settings_event (dpyinfo, event) | |
457 | struct x_display_info *dpyinfo; | |
458 | XEvent *event; | |
459 | { | |
460 | #ifdef HAVE_XFT | |
461 | int check_window_p = 0; | |
462 | ||
463 | switch (event->type) | |
464 | { | |
465 | case DestroyNotify: | |
466 | if (dpyinfo->xsettings_window == event->xany.window) | |
467 | check_window_p = 1; | |
468 | break; | |
469 | ||
470 | case ClientMessage: | |
471 | if (event->xclient.message_type == dpyinfo->Xatom_xsettings_mgr | |
472 | && event->xclient.data.l[1] == dpyinfo->Xatom_xsettings_sel | |
473 | && event->xclient.window == dpyinfo->root_window) | |
474 | check_window_p = 1; | |
475 | break; | |
476 | ||
477 | case PropertyNotify: | |
478 | if (event->xproperty.window == dpyinfo->xsettings_window | |
479 | && event->xproperty.state == PropertyNewValue | |
480 | && event->xproperty.atom == dpyinfo->Xatom_xsettings_prop) | |
481 | { | |
482 | apply_xft_settings (dpyinfo, True); | |
483 | } | |
484 | break; | |
485 | } | |
486 | ||
487 | if (check_window_p) | |
488 | { | |
489 | dpyinfo->xsettings_window = None; | |
490 | get_prop_window (dpyinfo); | |
491 | if (dpyinfo->xsettings_window != None) | |
492 | apply_xft_settings (dpyinfo, True); | |
493 | } | |
494 | #endif /* HAVE_XFT */ | |
495 | } | |
496 | ||
497 | ||
498 | static void | |
499 | init_gconf () | |
500 | { | |
501 | #ifdef HAVE_GCONF | |
502 | int i; | |
503 | char *s; | |
504 | /* Should be enough, this is called at startup */ | |
505 | #define N_FDS 1024 | |
506 | int fd_before[N_FDS], fd_before1[N_FDS]; | |
507 | int dummy, n_fds; | |
508 | GPollFD gfds[N_FDS]; | |
509 | ||
510 | /* To find out which filedecriptors GConf uses, check before and after. | |
511 | If we do not do this, GConf changes will only happen when Emacs gets | |
512 | an X event. */ | |
513 | memset (fd_before, 0, sizeof (fd_before)); | |
514 | n_fds = g_main_context_query (g_main_context_default (), | |
515 | G_PRIORITY_LOW, | |
516 | &dummy, | |
517 | gfds, | |
518 | N_FDS); | |
519 | for (i = 0; i < n_fds; ++i) | |
520 | if (gfds[i].fd < N_FDS && gfds[i].fd > 0 && gfds[i].events > 0) | |
521 | fd_before[gfds[i].fd] = 1; | |
522 | ||
523 | g_type_init (); | |
524 | gconf_client = gconf_client_get_default (); | |
525 | s = gconf_client_get_string (gconf_client, SYSTEM_MONO_FONT, NULL); | |
526 | if (s) | |
527 | { | |
528 | current_mono_font = xstrdup (s); | |
529 | g_free (s); | |
530 | } | |
531 | gconf_client_set_error_handling (gconf_client, GCONF_CLIENT_HANDLE_NONE); | |
532 | gconf_client_add_dir (gconf_client, | |
533 | SYSTEM_MONO_FONT, | |
534 | GCONF_CLIENT_PRELOAD_ONELEVEL, | |
535 | NULL); | |
536 | gconf_client_notify_add (gconf_client, | |
537 | SYSTEM_MONO_FONT, | |
538 | something_changedCB, | |
539 | NULL, NULL, NULL); | |
540 | n_fds = g_main_context_query (g_main_context_default (), | |
541 | G_PRIORITY_LOW, | |
542 | &dummy, | |
543 | gfds, | |
544 | N_FDS); | |
545 | ||
546 | for (i = 0; i < n_fds; ++i) | |
547 | if (gfds[i].fd < N_FDS && gfds[i].fd > 0 && gfds[i].events > 0 | |
548 | && !fd_before[gfds[i].fd]) | |
549 | { | |
550 | #ifdef F_SETOWN | |
551 | fcntl (i, F_SETOWN, getpid ()); | |
552 | #endif /* ! defined (F_SETOWN) */ | |
553 | ||
554 | #ifdef SIGIO | |
555 | if (interrupt_input) | |
556 | init_sigio (i); | |
557 | #endif /* ! defined (SIGIO) */ | |
558 | } | |
559 | #endif /* HAVE_GCONF */ | |
560 | } | |
561 | ||
562 | static void | |
563 | init_xfd_settings (dpyinfo) | |
564 | struct x_display_info *dpyinfo; | |
565 | { | |
566 | #ifdef HAVE_XFT | |
567 | char sel[64]; | |
568 | Display *dpy = dpyinfo->display; | |
569 | ||
570 | BLOCK_INPUT; | |
571 | ||
572 | sprintf (sel, "_XSETTINGS_S%d", XScreenNumberOfScreen (dpyinfo->screen)); | |
573 | dpyinfo->Xatom_xsettings_sel = XInternAtom (dpy, sel, False); | |
574 | dpyinfo->Xatom_xsettings_prop = XInternAtom (dpy, | |
575 | "_XSETTINGS_SETTINGS", | |
576 | False); | |
577 | dpyinfo->Xatom_xsettings_mgr = XInternAtom (dpy, "MANAGER", False); | |
578 | ||
579 | /* Select events so we can detect client messages sent when selection | |
580 | owner changes. */ | |
581 | XSelectInput (dpy, dpyinfo->root_window, StructureNotifyMask); | |
582 | ||
583 | get_prop_window (dpyinfo); | |
584 | if (dpyinfo->xsettings_window != None) | |
585 | apply_xft_settings (dpyinfo, False); | |
586 | ||
587 | UNBLOCK_INPUT; | |
588 | ||
589 | #else /* ! HAVE_XFT */ | |
590 | ||
591 | dpyinfo->Xatom_xsettings_sel = None; | |
592 | dpyinfo->Xatom_xsettings_prop = None; | |
593 | dpyinfo->Xatom_xsettings_mgr = None; | |
594 | dpyinfo->xsettings_window = None; | |
595 | ||
596 | #endif /* ! HAVE_XFT */ | |
597 | } | |
598 | ||
599 | void | |
600 | xsettings_initialize (dpyinfo) | |
601 | struct x_display_info *dpyinfo; | |
602 | { | |
603 | if (first_dpyinfo == NULL) first_dpyinfo = dpyinfo; | |
604 | init_gconf (); | |
605 | init_xfd_settings (dpyinfo); | |
606 | } | |
607 | ||
608 | ||
609 | DEFUN ("font-get-system-font", Ffont_get_system_font, Sfont_get_system_font, | |
610 | 0, 0, 0, | |
611 | doc: /* Get the system default monospaced font. */) | |
612 | () | |
613 | { | |
dfb3c4c6 | 614 | return current_mono_font && use_system_font |
637fa988 JD |
615 | ? make_string (current_mono_font, strlen (current_mono_font)) |
616 | : Qnil; | |
617 | } | |
618 | ||
619 | void | |
620 | syms_of_xsettings () | |
621 | { | |
622 | current_mono_font = NULL; | |
623 | first_dpyinfo = NULL; | |
624 | #ifdef HAVE_GCONF | |
625 | gconf_client = NULL; | |
626 | #endif | |
627 | ||
628 | Qfont_name = intern_c_string ("font-name"); | |
629 | staticpro (&Qfont_name); | |
630 | Qfont_render = intern_c_string ("font-render"); | |
631 | staticpro (&Qfont_render); | |
632 | defsubr (&Sfont_get_system_font); | |
633 | ||
dfb3c4c6 JD |
634 | DEFVAR_BOOL ("font-use-system-font", &use_system_font, |
635 | doc: /* *Non-nil means to use the system defined font. */); | |
636 | use_system_font = 0; | |
637 | ||
637fa988 JD |
638 | #ifdef HAVE_GCONF |
639 | Fprovide (intern_c_string ("system-font-setting"), Qnil); | |
640 | #endif | |
641 | #ifdef HAVE_XFT | |
642 | Fprovide (intern_c_string ("font-render-setting"), Qnil); | |
643 | #endif | |
644 | } |